Cooling device for underground explosion-proof power supply

Abstract

The utility model relates to the technical field of power supply heat dissipation, in particular to an underground explosion-proof power supply heat dissipation device which has the advantages of efficient heat dissipation, accurate temperature control adjustment and effective dust prevention. Comprising an explosion-proof shell which is internally provided with a mounting cavity for placing an explosion-proof power supply; the heat dissipation assembly comprises a liquid cooling pipeline and heat dissipation fins which are arranged in the mounting cavity, and the liquid cooling pipeline is distributed around the explosion-proof power supply in a snake shape and is tightly attached to the heat dissipation fins; the dust filtering mechanism is arranged at the air inlet of the explosion-proof shell and comprises replaceable filtering cotton and a vibration cleaning assembly, and the vibration cleaning assembly is connected with the filtering cotton and used for regularly cleaning dust on the filtering cotton; the temperature sensing and adjusting structure comprises a temperature sensor, a controller and a flow adjusting valve, the temperature sensor is arranged on the surface of the anti-explosion power source and used for monitoring the temperature of the power source in real time, the controller is electrically connected with the temperature sensor and the flow adjusting valve, and the flow adjusting valve is installed on a liquid inlet pipeline of the liquid cooling pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power supply heat dissipation, in particular to a kind of underground explosion-proof power supply heat dissipation device. BACKGROUND

[0002] In the underground operation environment of coal mine, metal mine and the like, underground power supply as the basis for the operation of various electrical equipment, its stable power supply is critical.Underground power supply is generally divided into alternating current power supply and direct current power supply, and the common voltage levels of alternating current power supply are 660V and 1140V, etc., mainly for power supply of high-power equipment such as coal mining machine and scraper conveyor;Direct current power supply is mainly used for monitoring and communication system with high requirement for power supply stability.These power supplies are usually composed of transformer, high-low voltage switch cabinet and battery, etc.Transformer is responsible for changing voltage level, high-low voltage switch cabinet is used for controlling and protecting circuit, and battery is used as backup power supply to ensure the operation of important equipment when normal power supply is interrupted.

[0003] However, the underground environment is harsh, there are flammable and explosive gases, humid and dusty, and narrow space, etc., and the stable operation of explosion-proof power supply as an important part of underground power supply system is directly related to the safety and efficiency of the whole underground operation.Although the existing air-cooled heat dissipation device has simple structure, but in the dusty underground environment, dust is easy to block, which leads to sharp decline of heat dissipation efficiency.Moreover, the existing heat dissipation device cannot be flexibly adjusted according to the actual heat generation of power supply, and cannot accurately adapt to the heat dissipation demand when the load of power supply changes, resulting in energy waste or insufficient heat dissipation. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a kind of underground explosion-proof power supply heat dissipation device with high-efficiency heat dissipation, precise temperature control and adjustment and effective dust prevention.

[0005] The underground explosion-proof power supply heat dissipation device of the utility model comprises:

[0006] The explosion-proof shell is provided with a mounting cavity for placing the explosion-proof power supply inside;

[0007] The heat dissipation assembly comprises a liquid cooling pipeline and a heat dissipation fin arranged in the mounting cavity, the liquid cooling pipeline is distributed in a snake shape around the explosion-proof power supply, and is tightly combined with the heat dissipation fin;

[0008] The dust filtering mechanism is arranged at the air inlet of the explosion-proof shell, and comprises replaceable filter cotton and a vibration cleaning assembly, the vibration cleaning assembly is connected with the filter cotton, and is used for periodically cleaning the dust on the filter cotton;

[0009] The temperature sensing adjusting structure comprises a temperature sensor, a controller and a flow adjusting valve, the temperature sensor is arranged on the surface of the explosion-proof power supply and is used for monitoring the temperature of the power supply in real time, the controller is electrically connected with the temperature sensor and the flow adjusting valve respectively, and the flow adjusting valve is installed on the liquid inlet pipeline of the liquid cooling pipeline, and the controller controls the flow adjusting valve to adjust the flow of the cooling liquid according to the temperature signal fed back by the temperature sensor.

[0010] Further, the liquid cooling pipeline and the heat dissipation fin are filled with a heat conductive material.

[0011] Further, the filter cotton is a multi-layer composite structure comprising a primary filter layer and a fine filter layer.

[0012] Further, the vibration cleaning assembly comprises a motor, an eccentric wheel and a connecting rod, the motor is connected with the filter cotton through the connecting rod, and the motor drives the eccentric wheel to rotate.

[0013] Further, a dust screen is arranged at the air outlet of the explosion-proof shell.

[0014] Further, a heat dissipation fan is further arranged inside the explosion-proof shell, and the controller starts the heat dissipation fan when the temperature sensor detects that the temperature exceeds the set high temperature threshold.

[0015] Further, the controller is further connected with a wireless communication module, which is used for remotely transmitting the temperature data and the equipment running state to a monitoring center.

[0016] Further, a shock-absorbing pad is arranged at the bottom of the explosion-proof shell, and the bottom of the shock-absorbing pad is provided with anti-skid lines.

[0017] Further, a temperature equalizing plate is arranged in the mounting cavity, and the temperature equalizing plate is arranged between the explosion-proof power supply and the heat dissipation fin, so that the surface temperature distribution of the explosion-proof power supply is more uniform.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] The liquid cooling pipeline and the heat dissipation fin are arranged around the explosion-proof power supply, so that the heat generated by the explosion-proof power supply can be effectively taken away; the temperature sensing adjusting structure can monitor the temperature of the power supply in real time through the temperature sensor, and the controller can control the flow adjusting valve to adjust the flow of the cooling liquid according to the temperature signal, and the heat dissipation fan can be started when the temperature exceeds the set high temperature threshold, so that the heat dissipation demand can be flexibly adjusted and accurately adapted according to the actual heat generation of the power supply, the energy waste is avoided and the heat dissipation is prevented; the multi-layer composite filter cotton arranged at the air inlet of the explosion-proof shell can effectively filter dust, and the vibration cleaning assembly can clean the dust on the filter cotton regularly, so that the service life of the filter cotton is prolonged, the air inlet quality is ensured, and the influence of the dust on the heat dissipation device and the power supply is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model discloses further illustrate below according to the drawing.

[0021] Fig. 1 It is the structure schematic diagram of the utility model;

[0022] Fig. 2 It is the internal structure schematic diagram of the utility model;

[0023] Fig. 3 It is the sectional structure schematic diagram of the utility model;

[0024] Fig. 4 It is the structure schematic diagram that vibration cleaning subassembly is connected with filter cotton of the utility model;

[0025] Marked in drawing: 1, explosion -proof housing;2, installation cavity;3, liquid cooling pipeline;4, heat dissipation fin;5, filter cotton;6, vibration cleaning subassembly;61, motor;62, eccentric wheel;63, connecting rod;7, temperature sensor;8, controller;9, flow regulating valve;10, dust screen;11, heat dissipation fan;12, shock pad;13, temperature equalizing plate. Specific implementation

[0026] The specific implementation of the utility model is further described in detail below in combination with the drawing and embodiment. The following embodiment is used to illustrate the utility model, but is not used to limit the scope of the utility model.

[0027] As Figs. 1 to 4 Indicated, the utility model discloses a kind of underground explosion-proof power supply heat dissipation device, comprising:

[0028] Explosion-proof housing 1, explosion-proof housing 1 is equipped with installation cavity 2 for placing explosion-proof power supply;

[0029] Heat dissipation subassembly, including the liquid cooling pipeline 3 and heat dissipation fin 4 being set in installation cavity 2, liquid cooling pipeline 3 is distributed around explosion-proof power supply in the shape of a snake, and is closely attached with heat dissipation fin 4;

[0030] Dust filtering mechanism, set at the air inlet of explosion-proof housing 1, including replaceable filter cotton 5 and vibration cleaning subassembly 6, vibration cleaning subassembly 6 is connected with filter cotton 5, for regularly cleaning dust on filter cotton 5;

[0031] Temperature sensing adjustment structure, including temperature sensor 7, controller 8 and flow regulating valve 9, temperature sensor 7 is set on the surface of explosion-proof power supply, for monitoring power supply temperature in real time, controller 8 is electrically connected with temperature sensor 7 and flow regulating valve 9 respectively, flow regulating valve 9 is installed on the liquid inlet pipeline of liquid cooling pipeline 3, according to the temperature signal fed back by temperature sensor 7, controller 8 controls flow regulating valve 9 to adjust cooling liquid flow;

[0032] During the working process, the power supply is fixed in the installation cavity 2 and heat exchange is performed by using the liquid cooling pipeline 3. The liquid cooling pipeline 3 is distributed in a serpentine shape and can fully contact the heat source to absorb the heat generated by the heat source. The cooling liquid circulates in the pipeline to transfer the heat to the closely attached heat dissipation fins 4. The heat dissipation fins 4 dissipate the heat to the surrounding environment by increasing the heat dissipation area, thereby achieving heat dissipation of the power supply. The replaceable filter cotton 5 at the air inlet filters the entering air to block dust from entering. The vibration cleaning assembly 6 is regularly vibrated to make the dust adsorbed on the filter cotton 5 fall off, thereby ensuring the air permeability and filtering effect of the filter cotton 5 and effectively solving the problem of blockage of the heat dissipation device caused by much dust in the underground. The temperature sensor 7 monitors the surface temperature of the power supply in real time and feeds back the temperature signal to the controller 8. The controller 8 controls the flow regulating valve 9 to adjust the flow of the cooling liquid on the liquid inlet pipeline of the liquid cooling pipeline 3 according to the preset temperature range. When the temperature of the power supply rises, the flow of the cooling liquid is increased to accelerate heat dissipation. When the temperature decreases, the flow of the cooling liquid is reduced to avoid energy waste. Compared with the traditional air-cooled heat dissipation device, the heat dissipation efficiency is higher by using the heat dissipation mode of the combination of the liquid cooling pipeline 3 and the heat dissipation fins 4, thereby effectively ensuring the stable operation of the explosion-proof power supply in a harsh environment.

[0033] The heat-conducting material is filled between the liquid cooling pipeline 3 and the heat dissipation fins 4. The heat-conducting material itself has a high thermal conductivity and can efficiently transfer heat. After the cooling liquid in the liquid cooling pipeline 3 absorbs the heat dissipated by the power supply, the temperature of the pipeline rises. At this time, the heat-conducting material filled between the two can quickly transfer the heat on the surface of the liquid cooling pipeline 3 to the heat dissipation fins 4 by virtue of the close arrangement between atoms or molecules. This close heat conduction connection avoids the increase in thermal resistance caused by the presence of low-thermal-conductivity media such as air, greatly improves the heat transfer efficiency from the liquid cooling pipeline 3 to the heat dissipation fins 4, and ensures that heat can be smoothly transferred from the liquid cooling pipeline 3 to the surrounding environment through the heat dissipation fins 4.

[0034] Preferably, the filter cotton 5 has a multi-layer composite structure including a primary filter layer and a fine filter layer. The primary filter layer is arranged at the outermost side and is made of a material with a large pore size. The primary filter layer mainly functions to preliminarily filter the entering air to intercept large-particle dust, debris and other impurities in the air, which can greatly reduce the filtering burden of the subsequent fine filter layer and prolong the service life of the fine filter layer. The fine filter layer is composed of a material with a very small pore size and high filtering precision. The air preliminarily filtered by the primary filter layer can be further filtered to remove fine dust particles through the fine filter layer, and even achieve a filtering precision of microns, thereby ensuring that the air entering the interior of the heat dissipation device contains almost no dust, and thus ensuring the normal operation of the heat dissipation device.

[0035] Preferably, the vibration cleaning assembly 6 comprises a motor 61, an eccentric wheel 62 and a connecting rod 63, the motor 61 is connected with the filter cotton 5 through the connecting rod 63, and the motor 61 drives the eccentric wheel 62 to rotate; due to the gravity center of the eccentric wheel 62 deviating from the rotation center, a centrifugal force is generated in the rotation process, the direction and size of the centrifugal force are constantly changed with the rotation of the eccentric wheel 62, thereby a periodic vibration is generated, the vibration generated by the eccentric wheel 62 is transmitted to the filter cotton 5 through the connecting rod 63, and the regular vibration can make the dust attached to the surface and pores of the filter cotton 5 separate from the filter cotton 5 under the action of the vibration, so that the filter cotton 5 is cleaned and the air permeability of the filter cotton 5 is maintained; by adjusting the rotating speed of the motor 61, the rotating speed of the eccentric wheel 62 can be changed, and then the frequency and intensity of the vibration are adjusted, the vibration parameters are flexibly adjusted according to different dust concentrations in the underground and the actual blocking condition of the filter cotton 5, and the best cleaning effect is realized.

[0036] Preferably, a dust screen 10 is arranged at the air outlet of the explosion-proof shell 1; the dust screen 10 is made of fine mesh material, which can block the dust particles in the outside from entering the inside of the explosion-proof shell 1 and contacting the electrical components and the heat dissipation assembly inside, so as to maintain the cleanliness inside the device and ensure the normal operation of the heat dissipation and other components.

[0037] In order to further enhance the heat dissipation effect, the device further comprises a heat dissipation fan 11 installed inside the explosion-proof shell 1; when the temperature sensor 7 detects that the temperature exceeds the set high temperature threshold, the controller 8 starts the heat dissipation fan 11; the heat dissipation fan 11 is powered by electricity, and the motor drives the fan blade to rotate at high speed, the high-speed rotating fan blade pushes the air flow, accelerates the air circulation inside the explosion-proof shell 1, and the cold air is continuously transported to the surrounding of the heating components to take away the heat, and the hot air is discharged through the air outlet, so as to assist the liquid cooling pipe 3 and the heat dissipation fin 4 to form a more perfect heat dissipation system.

[0038] Preferably, the controller 8 is further connected with a wireless communication module for remotely transmitting the temperature data and the equipment running state to the monitoring center; as the control core of the whole heat dissipation device, the controller 8 can receive the temperature signal transmitted by the temperature sensor 7 and control the heat dissipation fan 11 and other equipment, through the wireless communication module, when the temperature sensor 7 collects the surface temperature data of the explosion-proof power supply and the controller 8 monitors the running state information of the heat dissipation fan 11 and other equipment, the controller 8 encodes and packages these data, and then sends them out in the form of wireless signals according to the specific communication protocol, in the monitoring center, the corresponding receiving equipment and software system are arranged, which can receive and analyze these wireless signals, restore the temperature data and the equipment running state, so that the working personnel can master the working condition of the heat dissipation device in real time.

[0039] Preferably, the bottom of the explosion-proof shell 1 is provided with a shock-absorbing pad 12, and the bottom of the shock-absorbing pad 12 is provided with anti-skid lines; the shock-absorbing pad 12 is made of a material with elasticity, and when the downhole working environment is vibrated or the equipment is impacted by external force, the shock-absorbing pad 12 can absorb and disperse energy through its elastic deformation, thereby reducing the influence of vibration and impact force on the internal equipment of the explosion-proof shell 1; the anti-skid lines increase the friction between the shock-absorbing pad 12 and the placement plane, thereby effectively preventing the explosion-proof shell 1 from sliding or moving on the placement plane, and ensuring the stability of the equipment during the working process.

[0040] Preferably, a temperature equalizing plate 13 is arranged in the mounting cavity 2, and the temperature equalizing plate 13 is located between the explosion-proof power supply and the heat dissipation fin 4, and is used for making the surface temperature of the explosion-proof power supply more uniform; the temperature equalizing plate 13 is made of a material with high thermal conductivity, and its working principle is based on heat conduction and heat diffusion; when the explosion-proof power supply generates heat during work, the temperature equalizing plate 13 is in direct contact with the surface of the explosion-proof power supply, and quickly absorbs the heat generated at different positions of the power supply surface; due to the high thermal conductivity of the temperature equalizing plate 13, the heat is quickly diffused in the plate, and is conducted from the area with higher temperature to the area with lower temperature, so that the temperature of the entire temperature equalizing plate 13 tends to be uniform, and the heat of the local high-temperature area that may be generated on the surface of the explosion-proof power supply is dispersed, thereby making the surface temperature of the explosion-proof power supply more uniform and avoiding local overheating.

[0041] The downhole explosion-proof power supply heat dissipation device of the utility model, when working, temperature sensor 7 real time monitoring power supply surface temperature, controller 8 according to preset program, start liquid cooling system, cooling liquid circulates in liquid cooling pipeline 3, absorbs the heat generated by explosion-proof power supply, and is quickly transferred to heat dissipation fin 4 through heat-conducting material, and heat dissipation fin 4 dissipates heat to the surrounding environment; when temperature sensor 7 detects that the temperature exceeds the set normal range, controller 8 responds immediately; if the temperature is slightly higher than the normal range, controller 8 controls flow regulating valve 9 to increase the flow of cooling liquid first, and strengthens the liquid cooling effect; if the temperature continues to rise and exceeds the set high-temperature threshold, controller 8 starts heat dissipation fan 11, accelerates air convection, and assists heat dissipation; in the equipment running process, vibration cleaning assembly 6 starts according to the preset time interval, motor 61 drives eccentric wheel 62 to rotate, and transmits vibration to filter cotton 5 at the air inlet through connecting rod 63, so that the dust adsorbed on filter cotton 5 falls off, maintains the air permeability of filter cotton 5, and ensures smooth air inlet; the monitoring center receives temperature data and equipment running state information in real time through the wireless communication module.

[0042] The downhole explosion-proof power supply heat dissipation device of the utility model, its installation mode, connection mode or setting mode are all common mechanical modes, as long as the beneficial effects can be achieved.

[0043] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A heat dissipation device for an explosion-proof power supply in a well, characterized by, The utility model relates to an explosion -proof power supply device, including: An explosion -proof shell (1) is provided with the installation cavity (2) for placing the explosion -proof power supply in the explosion -proof shell (1); A heat dissipation assembly, including liquid cooling pipeline (3) and heat dissipation fin (4) set in the installation cavity (2), the liquid cooling pipeline (3) is distributed around the explosion -proof power supply in the shape of a snake, and is closely combined with the heat dissipation fin (4); A dust filtering mechanism is arranged at the air inlet of the explosion -proof shell (1), including replaceable filter cotton (5) and vibration cleaning assembly (6), the vibration cleaning assembly (6) is connected with the filter cotton (5), and is used for regularly cleaning the dust on the filter cotton (5); A temperature sensing adjustment structure, including temperature sensor (7), controller (8) and flow regulating valve (9), the temperature sensor (7) is arranged on the surface of the explosion -proof power supply and is used for monitoring the temperature of the power supply in real time, the controller (8) is electrically connected with the temperature sensor (7) and the flow regulating valve (9) respectively, the flow regulating valve (9) is installed on the liquid inlet pipeline of the liquid cooling pipeline (3), according to the temperature signal fed back by the temperature sensor (7), the controller (8) controls the flow regulating valve (9) to adjust the flow of coolant.

2. The heat sink for an explosion-proof power supply in a well as claimed in claim 1, wherein The liquid cooling pipeline (3) and the heat dissipation fin (4) are filled with heat-conducting material.

3. The heat sink for an explosion-proof power supply in a well as recited in claim 1 wherein, The filter cotton (5) is a multilayer composite structure, including a primary filter layer and a fine filter layer.

4. The heat sink for an explosion-proof power supply in a well as recited in claim 1 wherein, The vibration cleaning assembly (6) includes a motor (61), an eccentric wheel (62), and a connecting rod (63). The motor (61) is connected to the filter cotton (5) through the connecting rod (63). The motor (61) drives the eccentric wheel (62) to rotate.

5. The heat sink for an explosion-proof power supply in a well as recited in claim 1 wherein, A dust screen (10) is arranged at the air outlet of the explosion -proof shell (1).

6. The heat sink for an explosion-proof power supply in a well as recited in claim 1 wherein, A cooling fan (11) is also included, which is installed inside the explosion -proof shell (1). When the temperature sensor (7) detects that the temperature exceeds the set high temperature threshold, the controller (8) starts the cooling fan (11).

7. The heat sink for an explosion-proof power supply in a well as recited in claim 1 wherein, The controller (8) is also connected to a wireless communication module for remotely transmitting temperature data and device operating status to a monitoring center.

8. The heat sink for an explosion-proof power supply in a well of claim 1, wherein, A shock-absorbing pad (12) is provided at the bottom of the explosion -proof shell (1), and the bottom of the shock-absorbing pad (12) is provided with anti-skid lines.

9. The heat sink for an explosion-proof power supply in a well as recited in claim 1 wherein, A temperature equalization plate (13) is arranged in the installation cavity (2), which is located between the explosion -proof power supply and the heat dissipation fin (4) to make the surface temperature distribution of the explosion -proof power supply more uniform.

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